Knee pad cushion



FIG. 1 is a front perspective view from the right side showing my new knee pad cushion design;

FIG. 2 is a front view thereof;

FIG. 3 is a right side view thereof, with the left side view being identical thereto;

FIG. 4 is a back view thereof; and,

FIG. 5 is a bottom view thereof, with the top view being identical thereto. 

The ornamental design for a knee pad cushion, as shown and described. 